Korroke are a very popular staple food item in Japan. You can find them in pretty much any supermarket or convenience store, all the way up to higher end restaurants where they’re dressed up with quality ingredients.
I always like to get the veggie ones which are a mashed potato patty mixed with peas and corn, covered in a fine coating of crispy breadcrumbs, and deep fried. This is the most standard type of korokke, but you can also find them made out of mashed pumpkin, tofu pulp, or potatoes mixed with a bit of ground meat. They can be eaten as is, on top of noodles, or as a burger topped with shredded cabbage and sauce. So simple, but they’re really fantastic, especially if you can manage to get your hands on one while it’s still hot!